Effect of increasing dietary methionine-to-lysine ratio during early gestation on fetal development and piglet birth weight
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Effect of increasing dietary methionine-to-lysine ratio during early gestation on fetal development and piglet birth weight. / Bruun, Thomas Sønderby; Østrup, Esben; Lyderik, Kimmie Kyed; Dall, Jacob; Strathe, Anja Varmløse.
In: Animal Reproduction Science, Vol. 252, 107251, 2023.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Effect of increasing dietary methionine-to-lysine ratio during early gestation on fetal development and piglet birth weight
AU - Bruun, Thomas Sønderby
AU - Østrup, Esben
AU - Lyderik, Kimmie Kyed
AU - Dall, Jacob
AU - Strathe, Anja Varmløse
N1 - Publisher Copyright: © 2023 The Authors
PY - 2023
Y1 - 2023
N2 - It was hypothesized that increasing dietary methionine (Met) for sows in early gestation would have a positive effect on fetal and placental growth and development, thereby also increasing the birth weight of piglets. The objective of the study was to investigate the effect of increasing the total dietary methionine-to-lysine ratio (Met:Lys) from 0.29 (Control diet) to 0.41 (Met diet) from mating to day 50 of gestation. A total of 349 multiparous sows were allocated to either the Control or Met diet group. The sows’ backfat thickness was measured pre-farrowing, post-farrowing, and at weaning in the previous cycle and on days 14, 50 and 112 of gestation in the current cycle. On day 50, three Control and six Met sows were slaughtered. In 116 litters, piglets were weighed and measured individually at farrowing. The dietary treatment did not affect the sows’ backfat thickness before or during gestation (P > 0.05). The number of liveborn and stillborn piglets at farrowing were similar in both groups (P > 0.05) and no differences in average piglet birth weight, total litter weight at birth or within-litter variation in birth weight (P > 0.05) were observed. In conclusion, increasing the dietary Met:Lys ratio for sows in early gestation had no effect on piglet birth weight.
AB - It was hypothesized that increasing dietary methionine (Met) for sows in early gestation would have a positive effect on fetal and placental growth and development, thereby also increasing the birth weight of piglets. The objective of the study was to investigate the effect of increasing the total dietary methionine-to-lysine ratio (Met:Lys) from 0.29 (Control diet) to 0.41 (Met diet) from mating to day 50 of gestation. A total of 349 multiparous sows were allocated to either the Control or Met diet group. The sows’ backfat thickness was measured pre-farrowing, post-farrowing, and at weaning in the previous cycle and on days 14, 50 and 112 of gestation in the current cycle. On day 50, three Control and six Met sows were slaughtered. In 116 litters, piglets were weighed and measured individually at farrowing. The dietary treatment did not affect the sows’ backfat thickness before or during gestation (P > 0.05). The number of liveborn and stillborn piglets at farrowing were similar in both groups (P > 0.05) and no differences in average piglet birth weight, total litter weight at birth or within-litter variation in birth weight (P > 0.05) were observed. In conclusion, increasing the dietary Met:Lys ratio for sows in early gestation had no effect on piglet birth weight.
KW - Fetal size
KW - Fetal survival
KW - Newborn piglet
KW - Placental development
KW - Sow body condition
U2 - 10.1016/j.anireprosci.2023.107251
DO - 10.1016/j.anireprosci.2023.107251
M3 - Journal article
C2 - 37148749
AN - SCOPUS:85156124131
VL - 252
JO - Animal Reproduction Science
JF - Animal Reproduction Science
SN - 0378-4320
M1 - 107251
ER -
ID: 346591973